How to join joints ( Armature )?
The image is unclear. I cannot tell what end of either bone I am looking at.
To make a child bone connect to its parent after parenting, select the child bone, then go to Properties editor -&gt; Bone properties -&gt; Relations panel -&gt; Connected, and check it.
To parent one bone to another in a connected manner, select the desired child bone, then the desired parent bone (so the parent will be active), and strike Ctrl + P. In the appearing Parent menu, click “Connected.”
PS: a child bone’s tail can never truly connect to its parent’s tail.